Punctureproof reliner for pneumatic tires and casings



July 10, 1923.

' D. L. LAZERICK PUNCTUREPROOF RELINER FOR PNEUMATIC TIRES AND CASINGS Filed Jan. 30. 1922 2 Sheets-Sheet 1 INVE M414? ATTORN EY July 10, 1923.

D. L. LAZERICK PUNCTUREPROOF RELINER FOR PNEUMATIC TIRES AND CASINGS Filed Jan. 30. 1922 2 sheets-Sheet 3 3 INV'ENTED 72 ATTORNEY realise July in, was.

imita states imputation filed Januar so, 1922. Serial n fssaaeap 1 0 aZZtoizomit may concern Be it known that I, Davin L. LAznRIoK, a

citizen of the United States, and resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Punctureproof Reliners for Pneumatic Tires and Casings, of which I herebydeclare the'followingto be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same. i

The objects of the invention are to provide a simple and efiicient and flexible sheet metal shield for a pneumatic tire or tube which will yield in all directions to adapt itself to the contours of the tire and is also capable of expansion and contraction to accommodate itself to the movements of the tire when inflated and expanded, and when deflated andcompressed.

To accomplish these objects the shield comprises a thin band of spring metal preferably steel which has been electroplated with copper to enable it to unite with a rubber coating when vulcanized.

To enable the sheet metal shield to bend to conform to the circumferential curvatures of the tire, a band is formed wide enough when curved laterally to protect the tread side of the tire and to extend over the sides for enough to prevent a puncture thereof.

The invention further comprises an annular metal band curved to conform to the long and short curvature of the tire and inner tube and slitted in the form of circular arcs upon its circumferential margins alternate slits being cut from opposite edgesof the shield, the said arcs being parallel and alternately extending to the margins, no can? tral band of integral metal remaining, thus giving unusual fle'xibilityto the bandwhen bent in any direction and permitting it to expand when the tire becomes flattened.

The edges of these slits when the band is curved will overlap and permit any amount of bending desired, so that it will yield to pressure from any direction] The curved slits upon one side are staggered in relation to the slits upon the other side and the slits ovelap at their extremities leaving only a small connecting integral art. i

p The curvature of the slits is directed for ward upon the lower or ground side of the band and tire, the effect of which is to make more 'flexi ble'andadapted to be depressed one: at a time on opposite sidesof the band andto have their" extremities "trail to the Davin IMERICK, or ohnvnnann, or-fro.

' the tongues-or vanes separated"bythe slits.

rear as the tire advances over the groun'df'in the manner of a feather-drawmover ayflat surface and the 'curvededgesof the tongues 01' vanesare presented to the not-cutthe tire orinnertubep The invention comprises the combinatidn f l and arrangement of parts hereinafter de- 1 rear and will,

scribed, shown in the accompanying drawings and specifically pointed out in the claims.

In the accompanying drawings,-Fig. 1, 'is a longitudinalsection of a tire or casingshowi" ing the lnner tube and the shield and its en velope. Fig. 2, is a transverse section there-. Y

of; Fig. 3,'is a transverse section of the shield and its envelope. Fig. 4, is a plan of a portion ofthev shield showing it formed in overlapping sections. the-shield before it has been introduced into the tire, and has beencurved to conform therewith and illustrates the arcuate shape of the transverse slits. VlGW.

In these views, A, is the casing. B, is the shield which overlap each other at D, D, at i their extremities; E, is the integral-median" POI'tlOIl of the shield, which maybe per fectly smooth as shown in Fig. ,01 waved inner tube; 0, C, are the" sections "of the as shown in Fig. 5, which'permits of elongas Fig. 5 is a plan of I so I Fig. 6, 'is an edge tion and contraction under the movements of the tire and inner tube; F, F, are parallel arcuate slits which alternately pass through the edges of the shield and curve on each side of the shield towards the'rea'r on the ground side of thetire so that as the Wheel G, G, separated "fromeach other by the advancesextremities of the tongues or vanes orlacerate the envelope H, inwhich erally and longitudinally the extremitiesand v sides of the tongues will overlap. those in i the rear edges of the vanes and prevent them from cutting the inner tube. 5 I

The curved slits upon one lateral sideof i the band are staggered in relation to the curved slits in the opposite lateral sideand V overlap the same leaving only a narrow margin H, thus making the edges more fiexible since they are depressed one at a time upon alternate sides of the band and hence are more easily depressed. The overlapping slits also permit flexing and slightly elongating the' band without separating the overlapping edges of the tongues. Y

The whole shield is finally coated with rubber and vulcanized in a fabric envelope with overlapping ends, which permits it to be introduced loosely between the tire and tube or vulcanized integrally into the tire or casing.

Having described the invention what I claim. as new and desire to secure by Letters Patent is: I

A shield for a pneumatic tire or tube comprising a band of thin sheet metal curved to In testimony whereof, I hereunto setv my hand this 10th day of January, 1922.

DAVID L. LAZERICK. In presence of WM. M. MONROE, CHAS. F. S'IPE. 

